feat: add Mastra memory integration example

[m1lestones]

Summary

• Adds examples/mastra/typescript/ — a full Honcho memory integration for Mastra agents
• Uses new Agent({ instructions, tools }) with dynamic instructions built from Honcho context, and createTool() for memory recall
• Follows the same pattern as the existing examples/openai-agents/ example

What's included

examples/mastra/
├── README.md
└── typescript/
    ├── main.ts
    ├── package.json
    ├── tsconfig.json
    └── tools/
        ├── client.ts
        ├── saveMemory.ts
        ├── getContext.ts
        └── queryMemory.ts   # makeQueryMemoryTool(ctx) → createTool()

How it works

1. Dynamic instructions — buildInstructions(ctx) fetches Honcho session history and passes it as the instructions string to new Agent() before every generate() call.
2. Tool factory — makeQueryMemoryTool(ctx) returns a Mastra createTool() with a Zod schema, closing over the user context. execute calls Honcho's Dialectic API.
3. Auto-save — chat() persists the user message before agent.generate() and the assistant response after.

Test plan

• Set HONCHO_API_KEY and OPENAI_API_KEY in typescript/.env
• cd typescript && bun install && bun run main.ts
• Tell the agent something about yourself, start a new session, then ask "What do you remember about me?"

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📥 Commits

Reviewing files that changed from the base of the PR and between 5b6bd59 and a68654d.

📒 Files selected for processing (8)

• examples/mastra/README.md
• examples/mastra/typescript/main.ts
• examples/mastra/typescript/package.json
• examples/mastra/typescript/tools/client.ts
• examples/mastra/typescript/tools/getContext.ts
• examples/mastra/typescript/tools/queryMemory.ts
• examples/mastra/typescript/tools/saveMemory.ts
• examples/mastra/typescript/tsconfig.json

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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